10221001002220 has 24 divisors (see below), whose sum is σ = 21464270521344. Its totient is φ = 4088368321536.

The previous prime is 10221001002181. The next prime is 10221001002253. The reversal of 10221001002220 is 2220010012201.

It is a happy number.

It is a super-2 number, since 2×10221001002220² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10221001002220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696469 + ... + 4574611.

It is an arithmetic number, because the mean of its divisors is an integer number (894344605056).

Almost surely, 2^{10221001002220} is an apocalyptic number.

10221001002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221001002220 is an abundant number, since it is smaller than the sum of its proper divisors (11243269519124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221001002220 is a wasteful number, since it uses less digits than its factorization.

10221001002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009929 (or 4009927 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10221001002220 its reverse (2220010012201), we get a palindrome (12441011014421).

The spelling of 10221001002220 in words is "ten trillion, two hundred twenty-one billion, one million, two thousand, two hundred twenty".